package com.momoauth.api_client.utils;

import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

@Component
public class Utils {

    /**
     * 时间日期相加（分钟）
     * @param datetime
     * @param addMinutes
     * @return
     * @throws Exception
     */
    public long getNowTime(String datetime, String addMinutes) throws Exception {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date originalDate = sdf.parse(datetime);
        Calendar newTime = Calendar.getInstance();
        newTime.setTime(originalDate);
        newTime.add(Calendar.MINUTE,Integer.parseInt(addMinutes));//日期加n分
        Date newDate=newTime.getTime();
        String retval = sdf.format(newDate);
        return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse(retval).getTime();
    }

    /**
     * 获取IP地址
     * @param request
     * @return
     */
    public String getIpAddress(HttpServletRequest request) {
        String ip = request.getHeader("x-forwarded-for");
        if (ip != null && ip.length() != 0 && !"unknown".equalsIgnoreCase(ip)) {
            // 多次反向代理后会有多个ip值，第一个ip才是真实ip
            if( ip.indexOf(",")!=-1 ){
                ip = ip.split(",")[0];
            }
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
            System.out.println("Proxy-Client-IP ip: " + ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
            System.out.println("WL-Proxy-Client-IP ip: " + ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_CLIENT_IP");
            System.out.println("HTTP_CLIENT_IP ip: " + ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_X_FORWARDED_FOR");
            System.out.println("HTTP_X_FORWARDED_FOR ip: " + ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("X-Real-IP");
            System.out.println("X-Real-IP ip: " + ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
            System.out.println("getRemoteAddr ip: " + ip);
        }
        return ip;
    }
}
